Is my answer correct?

[vkhu]

I must construct a sentence using these hints:

Regard/ defective machines/ you/ can return/ us/

Here is my answer:
Regarding the defective machines, you can return it to us

Is my answer the right one?

[Rover_KE]

You need to change 'it' and add a punctuation mark at the end.

(You also need to change 'hints'.)

Rover